Like most people who reviewt sixt I wished i read the reviews before i rented from them.
I rented a car and returned withiout a scratch, i even made fotos when i parked the car.
I asked them if they can come and inspect the car they said they have not enough people,
Later they said there was a scratch and it is my fault, on my fotos there was nothing.
You guess the rest.
Looks like sixt makes its money doing stuff like this.
Never agian.